|
| |
|
|
A199328
|
|
Palindromic primes in the sense of A007500 with digits '0', '1' and '8' only.
|
|
1
|
|
|
|
11, 101, 181, 1181, 1811, 18181, 108881, 110881, 118081, 180181, 180811, 181081, 188011, 188801, 1008001, 1088081, 1110881, 1180811, 1181881, 1808801, 1880111, 1880881, 1881811, 1881881, 10001081, 10001801, 10011101, 10080011, 10101181, 10111001, 10111081, 10180801, 10188811, 10808101, 10810001
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,1
|
|
|
COMMENTS
|
Intersection of A007500 and A061247.
|
|
|
LINKS
|
Table of n, a(n) for n=1..35.
|
|
|
PROG
|
(PARI) a(n=50, L=[0, 1, 8], show=0)={my(t); for(d=1, 1e9, u=vector(d, i, 10^(d-i))~; forvec(v=vector(d, i, [1+(i==1&!L[1]), #L]), isprime(t=vector(d, i, L[v[i]])*u)|next; isprime(A004086(t))|next; show&print1(t", "); n--|return(t)))}
|
|
|
CROSSREFS
|
Cf. A020449 - A020472, A199325 - A199329.
Sequence in context: A083185 A007597 A061247 * A068188 A032592 A180404
Adjacent sequences: A199325 A199326 A199327 * A199329 A199330 A199331
|
|
|
KEYWORD
|
nonn,base
|
|
|
AUTHOR
|
M. F. Hasler, Nov 05 2011
|
|
|
STATUS
|
approved
|
| |
|
|
